Comparison of categorisation of total sample ED visits: Minnesota algorithm and Billings/Ballard algorithm
| Billings/Ballard category | ||||||
|---|---|---|---|---|---|---|
| MN algorithm category | Non-emergent (%) | Intermediate (%) | Emergent (%) | Special category only (%) | Unclassified (%) | Total (%) |
| Primary care treatable | 10.3 | 0.9 | 5.2 | 0.3 | 0.8 | 17.5 |
| ED care needed | 16.0 | 2.6 | 56.5 | 0.3 | 0.6 | 76.0 |
| Unclassified | 2.5 | 0.2 | 2.8 | 0.1 | 1.0 | 6.5 |
| Total | 28.7 | 3.7 | 64.4 | 0.7 | 2.4 | 100 |
N=2 644 545 (total observed sample, not just validation sample).
Percentages may not total 100% due to rounding.
Discordant algorithm ratings in bold (algorithms disagree on visit severity).
ED, emergency department; MN, Minnesota.